package nrrg.zhujuxing.application.learnscala

object controlAbastraction {
  def main(args: Array[String]): Unit = {
    def f1(a: Int): Int = {
      println(a)
      a
    }

    def f2(a: => Int): Unit = {
      println("a:" + a)
      println("a:" + a)
    }

    f2(23)
    f2(f1(1))
  }

}
